Question

Penyelesaian dari persamaan 2/3y-15=3,adalah...

Answer 1

2x+3y=17 | x2
3x-2y=-7 | x3

4x+6y=34
9x-6y=-21
------------- +
13x =13
x =13/13
x =1

2x+3y=17
2(1)+3y=17
2+3y=17
3y=17-2
3y=15
y=15/3
y=5

HP={x,y}
HP={1,5}

Answer 2

2/3y-15=3
2/3y=3+15
2/3y=18
y=18:2/3
y= 27